Slicing-machine knife



Nav. 23, 1926.

1,607,879 w. .1. DRUCKER SLICING MACHINE KNIFE Filed August l5, 1924 dSB INVENTOR 1,607,879 PATENT OFFICE.

WILLIAM J. DRUCKER, F WOODHAVEN, NEW YORK.

SLICING-MACHINE KNIFE.

Application filed August 15, 1924. Serial No. 732,17.

rl`his invention relates to slicing machines and has particularreference to machines of that general type that are equipped with rotaryknives.

Among the objects of this invention is to provide lfor a slicing machinea thin rotatable blade removably attachable to a support so as toprovide for economy of construction and ease of sharpening.

u) Still another object of this invention is to provide a knife havingvarious adjustable features.

Vith the foregoing and other objects in view the invention consists inthe combina- !5 tion and arrangement of parts hereinafter described andclaimed, and while the invention is not restricted to the exact detailsofy construction disclosed or suggested herein, still for the purposevof illustrating a praczo tical embodiment thereof reference is had tothe accompanying drawings in which like reference characters designatethe same parts in the several views, and in whicl1- Fig. 1 is anelevation of my blade.

Fig. 2 is a section showing a method of mounting the blade.

Fig. 3 is a section showing a modified form Iof knife construction.

Fig. 4 shows still another type of blade and a modified method ofmounting the same.

Referring now more specifically to 'the drawings I show my. improvedblade at 36 of annular form. This blade is provided with angularlyspaced holes 37 located remote from the outer periphery or cutting edgeof the blade, and'radial slots 38 spaced relatively to each other andlocated between the holes aforesaid 'and terminating in spaced relationto the cutting edge, whereby 40 the portions of the blade' between saidslots constitute in eHect a plurality of flexible locking tonguesadapted to be secured to a support by means of screws passing throughthe holes 37, whereby the blade is dished or concaved.

The blades are suitable for mounting in the structure shown in Figs. 2and 3. Referring more specifically to the modification shown in Fig. 2,screws 39 secure the annular blade to a supporting member 27a within aconcave seat 29 thereof. Thus'this member 27a is provided with a seriesof holes to receive lugs 40 or the like of an abutment formed on thearbor 20, to which it is sef" cured by means of a screw 41. A coverplate 42 is used particularly in connection vas well as for a simplerheat treatment for with the slotted annular knife 36 to prevent the samefrom collecting grease and the like, said plate being secured to theknife structure by means 0f a screw 43 threaded into the head of thescrew 41. In the modification shown in Fig. 3 the knife securing meansinclude a supporting member 27bvcentered upon an arbor 20" by means of alug or point 44, said platebeing secured to the arbor in any suitablemanner as by screwsl 45. lVhile the main body portion of said supportingmember is of fiat disk construction, an annular recessed seat 29h isprovided at the periphery of said member of concave form so that theannular blade 34 received thereby will be concaved or dished in a.suitable manner by means of the screws 39 coincident with securing it inplace. To prevent any possibility of sliced material clinging orcatching to the back of the knife a frusto conical shell or hood 46 isprovided at the side of the knife remote from the material to be sliced.This shell is held in close proximity to the knife and stationaryrelatively thereto by means of a sleeve 47 surrounding the arbor 20", towhich sleeve said shell is attached in any suitable manner. An annularlip 48 or the like is formed upon the member 27b in spaced relation tosaid shell .and overlapping or covering the edge thereof to insureeiective deflection of the sliced material. Fig. 4 embodies the seatstructure disclosed in Fig. 3 with a circular disk or plate 42a which issecured to the supporting member 27c in anysuitable manner as by screws49, said disk being beveled as at 50 along the periphery and at the facethereof adjacent` to an annular blade 51 so as to be substantiallyparallel to the seat 29b and to be adapted effectively to flex andconcave the blade. It will be noted that the blade 51 need not -beperforated, since the screws 49 do not pass therethrough but are locatedin spaced relation to the same.

With any of the exposed parts of the knife constructed of sanitarymaterial,such as stainless steel, I am able to produce a knife of themost attractive nature and yet at low cost because of the cheap initialand upkeep expense. l

The blade being of thin flat metal is adapted for'cheap and rapidconstruction hardening and tempering. The concave or dished form of theblade permits of the fastening screws orlother attaching devicesl blade,whereby the material sliced is adapted to move across the face of theknife without being caught `or obstructed by any part of the knife.

I claim l. In a slicing machine knife7 a supporting member having aconcave periphery constituting a seat to support an annular blade, afacing member on the opposite side of the blade from the supportingmember and bearing against the blade in proximity to its cuttingedge,and means acting upon the 15 facing member to draw it toward the supporting member to cause the blade to gripped between the facing memberand f said seat portion of the supporting member. y2. A device as setforth in claim 1 in which the facing member is a disk substantiallycoextensive with the supporting member and lying within the cavity backof the plane of the vcutting edge of the knife.

In testimony whereof I affix my signature.

WILLIAM J. DRUCKER.

